公开(公告)号：US20140333686A1

公开(公告)日：2014-11-13

申请号：US14269732

申请日：2014-05-05

Applicant: Samsung Display Co., Ltd.

Inventor： Jong-Soo KIM ,  Kyoung-Soo LEE ,  Myung-Ho LEE

IPC: G09G3/32

CPC classification number: G09G3/3233 ,  G09G3/2022 ,  G09G2300/043 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2310/061 ,  G09G2320/0233 ,  G09G2320/043

Abstract: A pixel for a display panel includes an organic light emitting diode and two driving transistors. The first driving transistor supplies current from a first power source to the organic light emitting diode based on a voltage applied to a first node. The second driving transistor coupled between an electrode of the first driving transistor and the organic light emitting diode. The second driving transistor is turned on or turned off corresponding to a data signal supplied from a data line. A third transistor, coupled between a gate electrode of the second driving transistor and the data line, is turned on when a scan signal is supplied to a scan line. A compensation circuit is coupled to the first node to compensate for a voltage corresponding to a threshold voltage of the first driving transistor.

Abstract translation: 用于显示面板的像素包括有机发光二极管和两个驱动晶体管。 第一驱动晶体管基于施加到第一节点的电压从第一电源向有机发光二极管提供电流。 耦合在第一驱动晶体管的电极和有机发光二极管之间的第二驱动晶体管。 对应于从数据线提供的数据信号，第二驱动晶体管导通或截止。 当扫描信号被提供给扫描线时，耦合在第二驱动晶体管的栅电极和数据线之间的第三晶体管导通。 补偿电路耦合到第一节点以补偿对应于第一驱动晶体管的阈值电压的电压。